I typically get 2.5″ – 3″ › Forums › Photometry › Hyperstar for photometry? › I typically get 2.5″ – 3″ 30 August 2018 at 7:23 am #579927 James ScreechParticipant I typically get 2.5″ – 3″ FWHM on my images using a 3.8um pixel size camera (ASI1600MM-C). I only use the middle quarter (area) of the camera due to field curvature. James
